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Comparison of dead time estimation methods for dynamical systems

AIP Conference Proceedings 2022年第1期2425卷

作者： Martin Tůma Pavel Jura Vilém Kárský Central European Institute of Technology CEITEC BUT Brno University of Technology Technicka 12 616 00 Brno Czech Republic Department of Control & Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Technicka 12 616 00 Brno Czech Republic

The analysis of dead time estimation problem is given. Dead time estimation method with generalized Laguerre functions is briefly presented. The results of presented method are compared with simple Laguerre functions, MATLAB Delayest and MAT-LAB Tder methods. The advantage of generalized Laguerre functions dead time estimation method is shown on data generated by MATLAB and also on real-life data generated from models of delayed dynamical systems.

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Dynamic High-Performance Decision-Making in Air Defense system Operation 6

Dynamic High-Performance Decision-Making in Air Defense Syst...

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6th IEEE Asian Conference on Defence Technology, ACDT 2019

作者： Azis, Nadana Ayzah Widyotriatmo, Augie Sumari, Arwin Datumaya Wahyudi Juliastuti, Endang Nazaruddin, Yul Yunazwin Institute of Technology Instrumentation and Control Research Group Bandung Bandung Indonesia Indonesia Defense University Sentul Department of Electrical Engineering State Polytechnic of Malang Malang Bogor Indonesia Faculty of Defense Technology Indonesia Defense University Sentul Bogor Indonesia

ISBN: (纸本)9781728117669

Decision-making in critical situations which are time-constraint and high-impact requires comprehensive information and a careful process. Such situations are always faced by an air defense commander who has the responsbility to secure the national airspace from any intruder which tries to enter the airspace anytime from anywhere. In a critical situation where an unknown or unregistered object enters the airspace, the air defense commander has to make the right decision based on the data and the information from its subordinates at the soonest time. An air defense system is a combination of sensors, weapons, command and control (C2), intelligence systems, communications, and personnel that forms Command, control. Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) operating under a designated air defense commander. Because of its criticality in time and precision in decision, in this study we proposed a solution to help the process of decision-making in the air defense system by modeling the dynamics of decision-making by using social network approach based on modified Friedkin-Johnsen model. We found that this model is helpful for an air defense commander in making a decision accordingly to the information received from his subordinates, and shortens the data processing in the decision-making process. Some air defense decision-making scenarios with different sensory apparatus configurations are also presented to show how it works in a dynamic situation and its high- performance in delivering a better decision. © 2019 IEEE.

关键词： Decision making

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RETRACTED ARTICLE: Google’s new AI technology detects cardiac issues using retinal scan

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Applied Nanoscience 2022年第4期13卷 3137-3137页

作者： Borra, Surya Prasada Rao Sumathy, B. Ismail, B. Mohammed Kumar, S. Naresh Phasinam, Khongdet Ramesh, R. Prasad V. Potluri Siddhartha Institute of Technology Vijayawada India Instrumentation and Control Engineering Srisairam Engineering College Chennai India Department of Information Technology Kannur University Kannur India School of Computer Science and Artificial Intelligence SR University Warangal India School of Agricultural and Food Engineering Faculty of Food and Agricultural Technology Pibulsongkram Rajabhat University Phitsanulok Thailand Department of Science and Humanities Sri Krishna College of Engineering and Technology Coimbatore India

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Continuous and comprehensive atmospheric observations in Beijing:a station to understand the complex urban atmospheric environment

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Big Earth Data 2020年第3期4卷 295-321页

作者： Yongchun Liu Chao Yan Zemin Feng Feixue Zheng Xiaolong Fan Yusheng Zhang Chang Li Ying Zhou Zhuohui Lin Yishou Guo Ying Zhang Li Ma Wenshuo Zhou Zhikun Liu Lubna Dada Kaspar Dallenbach Jenni Kontkanen Runlong Cai Tommy Chan Biwu Chu Wei Du Lei Yao Yonghong Wang Jing Cai Juha Kangasluoma Tom Kokkonen Joni Kujansuu Anton Rusanen Chenjuan Deng Yueyun Fu Rujing Yin Xiaoxiao Li Yiqun Lu Yiliang Liu Chaofan Lian Dongsen Yang Weigang Wang Maofa Ge Yuesi Wang Douglas R.Worsnop Heikki Junninen Hong He Veli-Matti Kerminen Jun Zheng Lin Wang Jingkun Jiang Tuukka Petaja Federico Bianchi Markku Kulmala Aerosol and Haze Laboratory Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingChina Institute for Atmospheric and Earth System Research/Physics Faculty of ScienceUniversity of HelsinkiHelsinkiFinland State Key Joint Laboratory of Environment Simulation and Pollution Control State Environmental Protection Key Laboratory of Sources and Control of Air Pollution ComplexSchool of EnvironmentTsinghua UniversityBeijingChina State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina Department of Environmental Science&Engineering Fudan UniversityShanghaiChina State Key Laboratory for Structural Chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijingChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science&TechnologyNanjingChina State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Aerodyne Research Inc. BillericaMassachusettsUSA Institute of Physics University of TartuTartuEstonia Joint International Research Laboratory of Atmospheric and Earth System Sciences School of Atmospheric SciencesNanjing UniversityNanjingChina

Due to profound impact on climate and human health,air quality has attracted attention from all levels of the civil *** key step in the provision of required tools for the society to tackle the complex air quality problem is to characterize it in a comprehensive manner with a long-term ***,we describe a continuous and comprehensive observation station and its accompanying state-ofthe-art instrumentation that was established to investigate the complex urban atmospheric environment in a rapidly developing Chinese *** station,located in downtown Beijing,aims to study air quality by identifying the major atmospheric pollutants and key processes determining their formation and loss mechanisms.A few hundreds of parameters are continuously measured with the state-of-the-art instruments,including trace gas concentrations,aerosol particle size distributions,and mass concentrations,covering aerosol particle chemical composition from molecules to micrometer-sized aerosol *** produced long-term,comprehensive big data with around 1�10^(11)bytes per *** this paper,we provide an overview on the facilities of the station,the instrumentation used,the workflow of continuous observations and examples of results from 2018 to 2019 and a basis for establishing a modern long-term,comprehensive atmospheric urban observation station in other megacities.

关键词： Continuous and comprehensive atmospheric observation air pollution complex photochemical smog haze new particle formation

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Approximation of the fractional order transfer functions with integer order transfer functions

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AIP Conference Proceedings 2022年第1期2425卷

作者： Vilem Karsky Martin Tuma Pavel Jura 1CEITEC Brno University of Technology 616 00 Brno Technicka 3082/12 Czech Republic 2Brno University of Technology Faculty of Electrical Engineering Department of Control and Instrumentation 616 00 Brno Technicka 3082/12 Czech Republic

This paper discusses the method for approximation of fractional order transfer functions with integer order transfer function using Generalized Laguerre functions. The method described in this paper tries to find transfer functions with similar impulse responses. In the end of this paper results are demonstrated in one example.

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A Method for Estimation of Motor Rotational Speed from STFT Spectrogram at a Non-stationary Conditions

A Method for Estimation of Motor Rotational Speed from STFT ...

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作者： Čala, Martin Beneš, Petr Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic

Vibration signals acquired from rotational machines may be measured without a tacho signal for different reasons - either the speed sensor cannot be mounted due to construction reasons, speed was not measured, or the tacho signal is corrupted or not accurate enough in case of higher speeds. This paper shows STFT spectrogram based approach to determine speed profile from multiple time-varying frequency components that can be used for instance for direct processing by a Vold-Kalman filter (VKF). The method functionality is demonstrated on a simulated signal as well as on a vibration signal measured using an accelerometer on electric motor during the run-up conditions, while the rotational speed was not measured. The only known information is maximum rotational speed, presence of run-up in the signal and the motor geometry. Conducted experiment showed that despite the simple approach that resides in utilization of only one method that results directly the speed profile, the method can handle larger rotational speed changes while having enough resolution needed for VKF processing. © 2018

关键词： Spectrographs

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Determination of Household Green Waste Fractions to Methane and its Economic Value

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IOP Conference Series: Materials Science and engineering 2021年第1期1096卷

作者： E Joelianto H P Edyson Instrumentation and Control Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung 40132 Indonesia Department of Chemical Engineering Faculty of Industrial Technology Parahyangan Catholic University Bandung 40141 Indonesia

The methane gas produced at the landfills has become one of the main causes of the global warming. On the other hand, solid waste has potentials as a new energy. One of the well-known methods in processing solid waste into a new energy is methanation or anaerobic fermentation process. This paper considers calculation of the solid waste fraction of green waste that can be released as methane from traditional market. The gas volume is measured by using U-pipe filled with water. The difference of water height in the U-pipe is used to calculate the formed biogas volume used to calculate the weight fraction of the methane and amount of profit which can be generated from the solid waste processing by using anaerobic fermentation. The profits are obtained from the use of methane as the source of electricity energy and the profit of selling compost from the fermented trash residue. The results of this research show that the solid waste fraction which can be released as methane has the value range 0.11% - 0.18%, the benefits that can be generated from anaerobic process for organic solid waste are 300,899,290.00 IDR annually for electricity energy and 24,432,222,254.00 IDR annually for compost.

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Optimisation of Sensor Electrode Size for in Electrical Resistance Tomography Implementing Conducting Boundary Strategy

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Journal of Physics: Conference Series 2021年第1期1874卷

作者： Suzanna Ridzuan Aw Ruzairi Abdul Rahim Fazlul Rahman Mohd Yunus Mohd Hafiz Fazalul Rahiman Yasmin Abdul Wahab Farah Hanan Azimi Lia Safiyah Syafie Nurul Huda Mat Tahir Raja Siti Nur Adiimah Raja Aris Shahrulnizahani Mohammad Din Faculty of Engineering Technology University College TATI (UC TATI) Telok Kalong 24000 Kemaman Terengganu Process Tomography and Instrumentation Engineering Research Group (PROTOM-i) INFOCOMM Research Alliance Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Malaysia Faculty of Electrical Engineering Universiti Malaysia Perlis Pauh Putra Campus 02600 Arau Perlis Malaysia Department of Instrumentation & Control Engineering (ICE) Faculty of Electrical & Electronics Engineering Universiti Malaysia Pahang 26600 Pekan Pahang Malaysia

Electrical Resistance Tomography (ERT), due to its diverse advantages has become a promising technique for monitoring and analysing various industrial flows. In this research, an ERT system employing a conducting bubble column was studied because a majority of industrial processes use metal composites for their columns. This paper presents an approach to obtain the optimum size of electrodes in ERT to maximize the capability of an ERT system. A finite element model using COMSOL software was developed to investigate the effect of the electrode size in ERT on sensing field distribution. By adapting the conducting boundary strategies in COMSOL, wider and longer electrodes reduce the potential change near source, suggesting less current density near source. Besides that, wider and longer electrodes also reduce the potential drop and improve the signal strength in Electrical Resistance Tomography. The optimum size of 12 mm x 100 mm electrode is sufficient for the proposed ERT system using conducting bubble column.

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Communication systems for Industry 4.0 and the IIoT

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IFAC-PapersOnLine 2018年第6期51卷 150-155页

作者： Zezulka, F. Marcon, P. Bradac, Z. Arm, J. Benesl, T. Vesely, I. Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Technicka 3082/12 Brno616 00 Czech Republic Department of Theoretical and Experimental Electrical Engineering Faculty of Electrical Engineering and Communication Brno University of Technology Technicka 3082/12 Brno616 00 Czech Republic

The paper discusses the basics of communication systems for open, safe, secure, near realtime, standardized communication interfaces and examines the problem of a unified architecture to comply with the principles of Industry 4.0 as applied to enterprises of the future. The first part of the analysis presents Open Platform Communication - Unified Architecture (OPC UA), a common SW basis to interconnect communication interfaces and control plus information protocols for the purposes of Industry 4.0. The platform enables readers from different branches of engineering to understand the fundamentals of state-of-the-art open communication, a necessity for further development of the Industrial Internet of Things (IIoT) and Industry 4.0 concepts. The following portion of the text then presents the most topical activities within enhancing the real - time properties of Internet of Things and Industry 4.0. The basics of Time Sensitive Networks (TSN) are explained and compared with the features and possibilities of standard public networks (the Internet) in relation to the onset of the 4th industrial revolution as outlined in the article. © 2018

关键词： Industry 4.0 Communication systems Computer architecture Internet of things Network architecture Industrial internets Industrial revolutions Information protocols Interconnect communication OPC UA Real time properties Standardized communication Unified architecture

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Forces caused by vacuum spring bellows during pumping of the quadrupole magnet module 57

Forces caused by vacuum spring bellows during pumping of the...

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57th International Scientific Conference on Experimental Stress Analysis, EAN 2019

作者： Rachač, Marek Dub, Martin Lopot, Frantisek Hosek, Jan Galimov, Artem CTU in Prague Faculty of Mechanical Engineering Department of Instrumentation and Control Engineering TechnickA 4 Prague166 07 Czech Republic CTU in Prague Faculty of Mechanical Engineering Department of Designing and Machine Components TechnickA 4 Prague166 07 Czech Republic Charles University Faculty of Sports and Physical Education Dep. of Anatomy and Biomechanics Lab. of Extrem Loading José MartIho 31 Prague162 52 Czech Republic Joint Institute for Nuclear Research Veksler and Baldin Laboratory of High Energy Physics Dubna Russia

ISBN: (纸本)9788021457669

The paper is focused on effect of forces induced by vacuum bellows due to differential pressure inside and outside of the bellows. This phenomenon can develop stress into rest of the vacuum system. In case of the beam pipe in NICA booster synchrotron bellow forces developed bending moment and there is a risk of the beam pipe destruction. The problem is analysed and FEA analysis is prepared. Due to unknown bellow stiffness between beam pipe modules in FEA analysis the experimental measurement is necessary. © Experimental Stress Analysis - 57th International Scientific Conference, EAN 2019 - Conference Proceedings. All rights reserved.

关键词： Bellows

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